Buick Regal 2018-2025 Service Manual / Steering & Driveline & Axle / Rear Drive Axle / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
- DTC C0393
- DTC C0407
- DTC C1230 or C1231
- DTC C1244, C1245, or C124B
- DTC C1282
- DTC C12A1 or C12A9
- Symptoms - Rear Differential Carrier
READ NEXT:
DTC C0393
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
DTC C0407
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
DTC C1230 or C1231
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
SEE MORE:
DTC P0627-P0629
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptor
DT
Evaporative Emission System Diagnosis
Special Tools
CH-44284-2 Fuel Flapper Door Holder
EN-41413-VLV EVAP Service Port Vent Fitting
GE-41415-60 Engine Induction System Leak Test Adapter/Capless Fuel Fill
Adapter
Operating Instructions for the Evaporative Emission System Tester
Vehicle Setup
WARNING: Refer to Fuel and Evaporative
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